ββA new X-ray microscopy technique could overcome the spatial resolution limits of todayβs X-ray imaging technologies.
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ββFomalhaut is the brightest star in the southern constellation of Piscis Austrinus, the Southern Fish, and one of the brightest stars in the night sky. It has the Bayer designation Alpha Piscis Austrini, which is Latinized from Ξ± Piscis Austrini, and is abbreviated Alpha PsA or Ξ± PsA. This is a class A star on the main sequence approximately 25 light-years (7.7 pc) from the Sun as measured by the Hipparcos astrometry satellite. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified.
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ββIn physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). It describes the rate of change of angular momentum that would be imparted to an isolated body. The concept originated with the studies by Archimedes of the usage of levers, which is reflected in his famous quote: "Give me a lever and a place to stand and I will move the Earth". Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen point. Torque is defined as the product of the magnitude of the perpendicular component of the force and the distance of the line of action of a force from the point around which it is being determined. The law of conservation of energy can also be used to understand torque.
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ββResearchers have entangled two calcium ions trapped in optical cavities 230 m apart β a record distance for these quantum particles.
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ββA quantum computer is a computer that exploits quantum mechanical phenomena. At small scales, physical matter exhibits properties of both particles and waves, and quantum computing leverages this behavior using specialized hardware. Classical physics cannot explain the operation of these quantum devices, and a scalable quantum computer could perform some calculations exponentially faster than any modern "classical" computer. In particular, a large-scale quantum computer could break widely used encryption schemes and aid physicists in performing physical simulations; however, the current state of the art is largely experimental and impractical.
The basic unit of information in quantum computing is the qubit, similar to the bit in traditional digital electronics. Unlike a classical bit, a qubit can exist in a superposition of its two "basis" states, which loosely means that it is in both states simultaneously. When measuring a qubit, the result is a probabilistic output of a classical bit. If a quantum computer manipulates the qubit in a particular way, wave interference effects can amplify the desired measurement results. The design of quantum algorithms involves creating procedures that allow a quantum computer to perform calculations efficiently.
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The basic unit of information in quantum computing is the qubit, similar to the bit in traditional digital electronics. Unlike a classical bit, a qubit can exist in a superposition of its two "basis" states, which loosely means that it is in both states simultaneously. When measuring a qubit, the result is a probabilistic output of a classical bit. If a quantum computer manipulates the qubit in a particular way, wave interference effects can amplify the desired measurement results. The design of quantum algorithms involves creating procedures that allow a quantum computer to perform calculations efficiently.
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ββA new nanosurgery technique targets cancer cells from inside the tumour, sparing healthy tissue in the process.
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ββA new solar-radiation-concentrating device produces βgreenβ hydrogen at a rate of more than 2 kW while maintaining efficiencies above 20%.
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ββπ WHY ASTEROIDS HAVE IRREGULAR SHAPES BUT PLANETS ARE SPHERICAL β
π Gravity shapes the planets into a spherical shape because it pulls the body equally in all directions. But during the formation period, everything was at molten state and asteroids froze quickly because of their small size, so gravity didn't get longer to shape it.
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ββMagnetohydrodynamics (MHD; also called magneto-fluid dynamics or hydroΒmagnetics) is the study of the magnetic properties and behaviour of electrically conducting fluids. Examples of such magnetoΒfluids include plasmas, liquid metals, salt water, and electrolytes. The word magnetoΒhydroΒdynamics is derived from magneto- meaning magnetic field, hydro- meaning water, and dynamics meaning movement. The field of MHD was initiated by Hannes AlfvΓ©n, for which he received the Nobel Prize in Physics in 1970.
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